[wattsgnu]

I’m no expert on these things, but in a chat room, they put a registration number of EI-ETJ which is this plane and it used to be F-OHMP which had a hard hit on landing on its tail in 2001.
http://aviation-safety.net/database/record.php?id=20011116-0
The following page is where it seems to be the same plane..
http://www.airfleets.net/ficheapp/plane-a321-663.htm

[Navy Patriot]

It appears the Russian GOVERNMENT is waiting until this and other structural defects are completely known before they cite a cause of the crash.

The AIRLINE is claiming it was not airframe failure.